Connecticut Limited Heating, Hot Water and Steam Contractor (S-5) Highlighted & Tabbed Book Package

Prepare for the Connecticut Limited Heating, Hot Water and Steam Contractor (S-5) examination with a focused collection of trade references and supplemental technical books that arrive professionally highlighted and tabbed. This package is designed for contractor candidates who want an organized study system for reviewing hot-water heating, steam systems, piping, equipment, controls, insulation, maintenance, testing, and general heating knowledge.

The Connecticut S-5 trade examination covers a specialized range of heating subjects, with a strong emphasis on piping and system equipment. Candidates must understand how hot-water and steam heating systems operate while also being able to locate code requirements, technical explanations, equipment information, piping data, definitions, diagrams, and tables within the approved examination references.

This package includes the International Mechanical Code, 2021 and Modern Refrigeration and Air Conditioning, 22nd Edition. These books support open-book preparation for the S-5 trade examination and provide information related to mechanical requirements, heating equipment, piping, controls, installation, operation, maintenance, testing, and troubleshooting.

The package also includes Modern Hydronic Heating for Residential and Light Commercial Buildings by John Siegenthaler, P.E.; Carrier System Design Manual Part III; and Pipefitter’s Handbook. These supplemental technical resources help candidates expand their knowledge of hydronic systems, piping design, system layouts, flow, pressure, equipment connections, practical pipefitting, and modern heating applications.

Every book included in this package is highlighted and permanently tabbed. Important chapters, definitions, code provisions, technical tables, equipment topics, piping subjects, formulas, and commonly reviewed material are marked to create an organized starting point for preparation.

Highlighted and tabbed references can reduce the time spent searching for major topics, but they do not replace studying. Candidates should review every tab, read the highlighted material, understand how each reference is arranged, and practice locating information under timed conditions. The strongest preparation combines practical trade experience, technical review, and repeated reference navigation.

The S-5 examination is open book, making familiarity with the approved references an important part of preparation. Candidates who wait until exam day to open the books may have difficulty locating information within the available testing time. Studying with prepared books helps candidates develop a consistent method for identifying the subject, selecting the correct reference, and finding the supporting material.

This product is a highlighted and tabbed book package. It does not include online course access, rental services, Application Service, a refundable deposit, business formation, or the separate Connecticut contractor Business and Law examination book.

Please allow up to 15 business days for tabbed and highlighted book package orders.

What You Get

The package brings together the primary S-5 trade examination references and supplemental technical materials for organized study. Candidates can use the approved books for exam-room preparation and the additional technical references to strengthen their understanding of hydronic heating, piping, equipment, flow, pressure, and system design.

Exam Details

The Connecticut Limited Heating, Hot Water and Steam Contractor (S-5) trade examination contains 40 questions. Candidates are allowed 1½ hours to complete the examination, and a minimum score of 70 percent is required to pass.

The published S-5 examination content outline includes the following subject areas:

• Insulation: 1 question
• General Knowledge: 4 questions
• Controls: 5 questions
• Equipment: 8 questions
• Piping: 17 questions
• Maintenance and Testing: 5 questions

Piping is the largest examination category, accounting for 17 of the 40 questions. Candidates should devote substantial preparation time to piping materials, fittings, joining methods, valves, supports, insulation, expansion, circulation, system arrangements, flow, pressure, and the movement of hot water or steam through a heating system.

Equipment is the second-largest category. Candidates should understand boilers, pumps, circulators, expansion tanks, air separators, heat exchangers, terminal units, valves, controls, and other equipment commonly used in hot-water and steam heating systems.

The controls category may include thermostats, aquastats, pressure controls, relays, operating limits, safety controls, control valves, and equipment sequences. Candidates should understand how controls start, stop, regulate, and protect heating equipment.

Maintenance and testing questions may involve system startup, equipment inspection, pressure testing, temperature measurements, preventive maintenance, troubleshooting, and identifying unsafe or inefficient operating conditions.

General knowledge questions may draw on accepted heating practices, system operation, equipment principles, piping relationships, and contractor-level trade understanding. Insulation questions may address materials, installation, heat loss, system efficiency, or protection of piping and equipment.

With 90 minutes available for 40 questions, candidates have an average of approximately two minutes and fifteen seconds per question. This time includes reading the question, identifying the subject, selecting the appropriate book, locating the supporting information, and choosing an answer.

Contractor candidates may also be required to pass the applicable Connecticut Business and Law examination. That examination is separate from the S-5 trade test and uses its own approved reference, which is not included in this highlighted and tabbed trade book package.

Open Book Test

The Connecticut S-5 Limited Heating, Hot Water and Steam Contractor examination is an open-book test. Candidates may bring approved references into the examination center under the applicable testing rules.

The International Mechanical Code, 2021 and Modern Refrigeration and Air Conditioning, 22nd Edition are the primary approved trade references included in this package. The remaining books are supplemental technical study resources intended to reinforce hydronic, piping, system-design, and practical pipefitting knowledge before the examination.

Approved examination references may be highlighted, underlined, annotated, and indexed before the test. Permanent tabs may be used to identify chapters, definitions, formulas, tables, equipment subjects, piping topics, and other useful sections.

Temporary tabs, removable notes, loose papers, and inserted pages are not permitted. Candidates may not write in the books during the examination, and questions or answers may not be recorded inside the approved references.

The approved books in this package arrive highlighted and tabbed. Candidates should review the markings before exam day, understand what each tab identifies, and practice locating the associated material. A tab is most helpful when the candidate already understands the subject and knows how the marked section relates to the question.

A practical open-book strategy begins with identifying the type of question. Code-based questions involving mechanical systems, equipment installation, boilers, piping, insulation, testing, or safety may lead to the International Mechanical Code. Technical questions involving heating principles, equipment, controls, operation, maintenance, or troubleshooting may be supported by Modern Refrigeration and Air Conditioning.

Candidates should use tables of contents, indexes, chapter headings, diagrams, technical tables, and permanent tabs instead of searching page by page. Reading the complete section is important because definitions, exceptions, notes, and surrounding provisions may affect the correct answer.

Timed practice can help candidates learn when to research a question and when to move forward. Spending too much time on a single difficult item can reduce the time available for questions that may be answered more quickly.

Licensing Steps

1. Review the S-5 license scope. Confirm that the Connecticut Limited Heating, Hot Water and Steam Contractor classification covers the work you intend to offer.
2. Meet the qualifying experience requirement. Establish the required properly licensed journeyperson experience or equivalent experience and training accepted by Connecticut.
3. Gather supporting records. Prepare license history, employment verification, apprenticeship documentation, classroom records, and other qualification materials required for the application pathway.
4. Complete the contractor application. Submit the applicable application and supporting information to the Connecticut Department of Consumer Protection.
5. Receive examination eligibility. The state reviews the applicant’s qualifications and determines whether the candidate may proceed to testing.
6. Schedule the required examinations. Follow the testing provider’s registration and scheduling procedures after eligibility is granted.
7. Prepare for the S-5 trade examination. Study the highlighted and tabbed references, review the examination outline, and practice locating information under timed conditions.
8. Prepare for Business and Law. Obtain the separately listed Connecticut contractor business reference and prepare for the applicable Business and Law examination.
9. Complete the examinations. Pass the required S-5 trade and contractor Business and Law examination portions.
10. Complete license issuance requirements. Submit any remaining documentation, examination results, and licensing fees according to Connecticut’s instructions.

Passing the trade examination does not automatically issue the contractor license. Applicants must satisfy Connecticut’s experience, application, examination, documentation, and license-issuance requirements.

State Requirements

The Connecticut S-5 credential is a limited contractor license for qualifying hot-water and steam heating work. The classification focuses on heating equipment, associated piping, controls, insulation, maintenance, testing, and system operation within the scope established by Connecticut.

The S-5 classification does not provide unlimited authority to perform all heating, cooling, fuel gas, oil burner, refrigeration, piping, or air-conditioning work. Contractors must remain within the authorized scope and obtain any additional Connecticut license required for work outside that scope.

Applicants must establish qualifying trade experience before becoming eligible for the contractor examination. Connecticut may review license history, supervised employment, apprenticeship completion, classroom instruction, and other supporting records.

Applicants relying on equivalent experience or education may be required to provide detailed documentation describing the type and duration of training. The Connecticut Department of Consumer Protection determines whether the submitted qualifications meet the applicable requirements.

Contractor candidates may need to complete both the S-5 trade examination and the contractor Business and Law examination. The business examination addresses subjects beyond technical heating work, including business organization, contracts, project administration, financial management, employment responsibilities, risk management, and safety.

The occupational contractor license and the contractor’s business entity serve different purposes. Holding an S-5 license does not eliminate the responsibility to establish and operate the business according to applicable state and local requirements.

Reference Books

• International Mechanical Code, 2021
  This approved exam-room code covers mechanical systems, boilers, equipment installation, piping, insulation, controls, testing, and related safety requirements. The included copy is highlighted and tabbed to support organized code study and faster navigation.
• Modern Refrigeration and Air Conditioning, 22nd Edition
  This approved technical reference supports preparation involving heating principles, system equipment, controls, operation, inspection, maintenance, testing, and troubleshooting. The included copy is highlighted and tabbed.
• Modern Hydronic Heating for Residential and Light Commercial Buildings, John Siegenthaler, P.E., 2022
  This supplemental technical book covers boilers, circulators, heat sources, hydronic distribution, radiant heating, piping arrangements, controls, hydraulic separation, and modern heating-system performance. The included copy is highlighted and tabbed.
• Carrier System Design Manual Part III
  This supplemental manual supports study involving piping design, system layouts, flow, pressure relationships, equipment connections, and practical heating-system design considerations. The included copy is highlighted and tabbed.
• Pipefitter’s Handbook
  This supplemental handbook provides practical piping information, measurements, fitting data, calculations, layouts, and technical reference material useful for the piping-focused S-5 examination. The included copy is highlighted and tabbed.

Exam Room Approved Books

The following highlighted and tabbed references from this package are approved for use during the Connecticut S-5 trade examination:

• International Mechanical Code, 2021
  Use this code for questions involving boilers, mechanical equipment, piping, insulation, installation requirements, controls, testing, and system safety.
• Modern Refrigeration and Air Conditioning, 22nd Edition
  Use this reference for technical questions involving heating principles, equipment, controls, system components, operation, maintenance, testing, and troubleshooting.

Modern Hydronic Heating for Residential and Light Commercial Buildings, Carrier System Design Manual Part III, and Pipefitter’s Handbook are included as supplemental technical study resources. They are not listed as approved references for use inside the S-5 trade examination room.

Candidates are responsible for bringing their approved references to the testing center. The examination location does not provide each candidate with a personal set of books.

The approved books arrive highlighted and permanently tabbed. Candidates should use them throughout preparation so the tab system, chapter layout, and highlighted material become familiar before the examination.

Test Information and Study Materials

A productive S-5 study plan should begin with piping because it accounts for 17 of the 40 trade examination questions. Review piping materials, fittings, joining methods, supports, valves, expansion, circulation, insulation, flow, pressure, and system layouts.

Candidates should understand the differences between hot-water and steam systems. Study how water, steam, and condensate move through their respective systems, how circulation occurs, and how piping arrangements affect system operation.

Equipment accounts for eight examination questions. Review boilers, pumps, circulators, expansion tanks, air separators, heat exchangers, terminal units, control valves, and other components used in hot-water and steam heating systems.

Controls and maintenance each account for five questions. Candidates should understand thermostats, aquastats, pressure controls, relays, operating limits, safety devices, control valves, equipment sequences, system inspection, pressure testing, preventive maintenance, and common troubleshooting principles.

Use the International Mechanical Code to review formal mechanical requirements. Pay attention to definitions, tables, exceptions, equipment provisions, piping requirements, installation rules, and testing procedures.

Use Modern Refrigeration and Air Conditioning to reinforce heating principles, equipment functions, controls, operation, maintenance, and troubleshooting. Review technical diagrams and system sequences rather than relying only on isolated definitions.

Use Modern Hydronic Heating to deepen your understanding of boilers, circulators, radiant heating, piping arrangements, hydraulic separation, distribution systems, and modern controls. This resource can help connect system-design concepts with field applications.

Carrier System Design Manual Part III and Pipefitter’s Handbook can reinforce flow, pressure, piping layouts, fitting data, equipment connections, measurements, and calculations. These resources are particularly useful when building a stronger foundation for the piping-heavy portion of the examination.

Timed practice should include identifying the most likely reference before opening a book. Use the permanent tabs, index, table of contents, and chapter headings to find the supporting material, then read the complete section before choosing an answer.

Review missed practice questions carefully. Locate the applicable code provision or technical explanation, determine why the original selection was incorrect, and study related concepts that may appear in a differently worded examination question.

How 1 Exam Prep Helps You Reach Your Goal

1 Exam Prep helps Connecticut S-5 contractor candidates begin their preparation with an organized collection of highlighted and tabbed trade references and supplemental technical books. The package brings together materials connected to piping, heating equipment, controls, maintenance, testing, hydronic systems, and practical pipefitting.

Trade-focused review helps candidates connect each examination category with the appropriate reference. The International Mechanical Code supports code-based mechanical requirements, while Modern Refrigeration and Air Conditioning reinforces heating principles, equipment, controls, operation, and troubleshooting.

The supplemental books provide additional depth for piping and hydronic preparation. Candidates can review system layouts, circulation, pressure, flow, equipment connections, radiant heating, hydraulic separation, pipefitting data, and modern heating applications.

Prepared highlighting helps draw attention to useful information, while permanent tabs create an organized navigation system for major subjects. Candidates should combine these features with repeated study so they can locate information more efficiently during timed practice.

Practice-oriented preparation helps candidates identify weaker subjects before exam day. Additional review can then be directed toward piping, equipment, controls, insulation, maintenance, testing, or general heating knowledge.

No highlighted and tabbed book package can guarantee examination eligibility, a passing score, application approval, or contractor license issuance. Consistent study, qualifying experience, familiarity with the approved references, and effective time management remain important parts of the Connecticut S-5 licensing process.

FAQ Section

What books are included in this package?

The package includes the International Mechanical Code, 2021; Modern Refrigeration and Air Conditioning, 22nd Edition; Modern Hydronic Heating for Residential and Light Commercial Buildings; Carrier System Design Manual Part III; and Pipefitter’s Handbook.

Are all included books highlighted and tabbed?

Yes. Every book included in this package is highlighted and permanently tabbed before delivery.

How long should I allow for the order?

Please allow up to 15 business days for tabbed and highlighted book package orders.

Is the Connecticut S-5 examination open book?

Yes. The Connecticut S-5 trade examination is open book, and candidates may bring approved references into the testing center under the applicable examination rules.

How many questions are on the S-5 examination?

The examination contains 40 questions. Candidates have 1½ hours to complete the test and must earn a minimum score of 70 percent.

What is the largest S-5 examination category?

Piping is the largest category, accounting for 17 of the 40 questions. Equipment is the second-largest category with eight questions.

Are all five books allowed into the S-5 examination?

No. The International Mechanical Code and Modern Refrigeration and Air Conditioning are the approved trade exam-room references. The other three books are supplemental study resources.

Does this package include online course access?

No. This product is a highlighted and tabbed book package and does not include an online course.

Is this a rental package?

No. This product is not identified as a rental package and does not include a refundable book deposit.

Is the Connecticut Business and Law book included?

No. The contractor Business and Law examination book is not included in this highlighted and tabbed S-5 trade book package.

Does purchasing this package guarantee a contractor license?

No. Applicants must meet Connecticut’s qualification requirements, receive examination eligibility, pass the required examinations, complete the application process, and receive state approval.